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  1. BBQ Engineer

    B31 Thermal / Displacement Stress Range 20 ksi allowable cap / 0.72 SMYS origins

    Hello Everyone, I was wondering if anyone was aware of the origins of the 20 ksi cap found in B31.3's displacement stress range calculation for hot and cold allowables. I know the stress range formula was based off of Markl's work in the 50's, however I never came across the 20 ksi...

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